Observation information
- date-obs: 2025-06-09
- time-obs: 18:35:20.925100000
- date-end: 2025-06-09
- time-end: 20:42:51.903600000
- obs_id: A13_037T01_9000006476
- exposure: 1300.53941208
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52463cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52463cztM0_level2_quad_clean.evt
|
| Size (bytes) | 801,751,680 | 84,504,960 |
| Size | 764.6 MB
| 80.6 MB
|
| Events in quadrant A | 3,169,863 | 675,133 |
| Events in quadrant B | 3,515,286 | 714,977 |
| Events in quadrant C | 6,054,860 | 607,979 |
| Events in quadrant D | 16,407,507 | 81,859 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14455 | 0 |
| B | 0 | 15263 | 0 |
| C | 0 | 22685 | 0 |
| D | 0 | 53377 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6821 | 46 | 0.674388% |
| B | 6821 | 129 | 1.891218% |
| C | 6822 | 683 | 10.011727% |
| D | 6822 | 6822 | 100.000000% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7651 | 6822 | 3 | 3 | 0.04% | 0.04% |  |
| B | 7651 | 6822 | 33 | 33 | 0.43% | 0.48% |  |
| C | 7652 | 6823 | 525 | 525 | 6.86% | 7.69% |  |
| D | 7652 | 6823 | 5660 | 5660 | 73.97% | 82.95% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 3 | 14 | 129576 | 698.95 | 743 | 726 | 184.3 |
| A | 4 | 3 | 32431 | 171.99 | 743 | 726 | 184.3 |
| A | 11 | 3 | 28002 | 147.96 | 743 | 726 | 184.3 |
| B | 4 | 81 | 172911 | 1087.92 | 732 | 706 | 158.3 |
| B | 4 | 171 | 129631 | 814.5 | 732 | 706 | 158.3 |
| B | 7 | 252 | 65464 | 409.12 | 732 | 706 | 158.3 |
| C | 4 | 5 | 1644540 | 8678.85 | 692 | 687 | 189.4 |
| C | 15 | 224 | 712741 | 3759.34 | 692 | 687 | 189.4 |
| C | 2 | 12 | 296084 | 1559.57 | 692 | 687 | 189.4 |
| D | 15 | 93 | 15554196 | 466734.39 | 109 | 104 | 33.3 |
| D | 12 | 17 | 150187 | 4503.57 | 109 | 104 | 33.3 |
| D | 6 | 42 | 86832 | 2602.46 | 109 | 104 | 33.3 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |